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Apparatus and method for outputting audio data using wireless terminalRelated Patent Categories: Electrical Audio Signal Processing Systems And Devices, Binaural And Stereophonic, Am Subcarrier, , , Automatic Switchover Between Mono And Stereo ModesApparatus and method for outputting audio data using wireless terminal description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070195962, Apparatus and method for outputting audio data using wireless terminal. Brief Patent Description - Full Patent Description - Patent Application Claims
PRIORITY [0001] This application claims priority under 35 U.S.C. .sctn. 119 to an application entitled "Apparatus and Method for Outputting Audio Data Using Wireless Terminal" filed in the Korean Intellectual Property Office on Jan. 27, 2006 and assigned Ser. No. 2006-9038, the contents of which are incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates generally to an apparatus and method for outputting audio data using a wireless terminal, and in particular, to an apparatus and method for outputting audio data using a wireless terminal to output audio data of an external audio device from an audio data output device performing wireless communication with the wireless terminal. [0004] 2. Description of the Related Art [0005] Bluetooth.RTM. is one of wireless interface standards for wireless connection between portable devices such as cellular phones and portable personal computers (PCs), network access points, and other peripherals, which are small-sized and low-priced and have low power consumption. Bluetooth.RTM. is a communication technology for connecting devices separated from each other by commonly 10 m (a maximum of 100 m) regardless of obstacles, and a data rate of Bluetooth.RTM. is 433.9 kbps in a symmetrical communication mode and 723.2 kbps in an asymmetrical communication mode. In addition, for voice transmission, a 64 kbps sync transmission method is used, and a maximum of three voice channels can be used. Furthermore, 10 Mbps-class technology for transmitting a moving picture has been being developed. [0006] Recently, wireless terminals in which an advanced audio distribution profile (A2DP) is implemented have become available on the market. The A2DP is a profile for allowing a conventional Bluetooth.RTM.-equipped wireless terminal using a headset profile and a hands free profile and supporting only mono sound to support stereo sound. In the Bluetooth.RTM. A2DP, a sub band codec (SBC) is used as a Bluetooth.RTM. standard codec. That is, if audio data obtained by encoding any decoded audio data using the SBC in a wireless terminal is transmitted to a Bluetooth.RTM. stereo headset, the Bluetooth.RTM. stereo headset outputs stereo sound by decoding the SBC-encoded audio data. However, a conventional wireless terminal having a Bluetooth.RTM. wireless communication module can output audio data only stored therein to a Bluetooth.RTM. stereo headset. SUMMARY OF THE INVENTION [0007] An object of the present invention is to substantially solve at least the above problems and/or disadvantages and to provide at least the advantages below. Accordingly, an object of the present invention is to provide an apparatus and method for outputting audio data using a wireless terminal to output audio data of an external audio device from an audio data output device performing wireless communication with the wireless terminal. [0008] According to one aspect of the present invention, there is provided an apparatus for outputting audio data using a wireless terminal, the apparatus including: an external audio device for outputting audio data to the wireless terminal when connected to the wireless terminal; the wireless terminal for encoding the audio data input from the external audio device when connected to the external audio device and transmitting the encoded audio data to an audio data output device in a wireless communication state; and the audio data output device for performing wireless communication with the wireless terminal, decoding the encoded audio data of the external audio device received from the wireless terminal through the wireless communication, and outputting the decoded audio data. [0009] According to another aspect of the present invention, there is provided a method of outputting audio data using a wireless terminal, the method including: performing wireless communication between the wireless terminal and an audio data output device; and if the wireless terminal and an external audio device are connected, transmitting, by the wireless terminal, audio data input from the external audio device to the audio data output device through the wireless communication and allowing the audio data output device to output the audio data. BRIEF DESCRIPTION OF THE DRAWINGS [0010] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which: [0011] FIG. 1 is a diagram explaining an operation of transmitting audio data of an external audio device from an audio data output device via a wireless terminal according to the present invention; [0012] FIG. 2 is a block diagram of the wireless terminal of FIG. 1 according to the present invention; and [0013] FIG. 3 is a flowchart illustrating a process of transmitting audio data of an external audio device to an audio data output device from a wireless terminal according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0014] Preferred embodiments of the present invention will be described herein below with reference to the accompanying drawings. In the drawings, the same or similar elements are denoted by the same reference numerals even though they are depicted in different drawings. Herein, it is assumed that wireless communication performed between a wireless terminal and an audio data output device is Bluetooth.RTM. wireless communication and the audio data output device is a Bluetooth.RTM. stereo headset. [0015] FIG. 1 is a diagram explaining an operation of outputting audio data of an external audio device 200 from a headset 300, which is an audio data output device, via a wireless terminal 100 according to the present invention. [0016] Referring to FIG. 1, the external audio device 200 stores audio data and can be connected to the wireless terminal 100 via an interface data cable 400. When the external audio device 200 is connected to the wireless terminal 100 via the interface data cable 400, the external audio device 200 outputs the stored audio data to the wireless terminal 100. Herein, the audio data output to the wireless terminal 100 from the external audio device 200 can be analog audio data or digital pulse code modulation (PCM) data. [0017] The wireless terminal 100 can perform Bluetooth.RTM. wireless communication with the headset 300. To do this, each of the wireless terminal 100 and the headset 300 includes a Bluetooth.RTM. wireless communication module. When the wireless terminal 100 is connected to the external audio device 200 via the interface data cable 400, the wireless terminal 100 encodes audio data input from the external audio device 200 and transmits the encoded audio data to the headset 300 connected using the Bluetooth.RTM. wireless communication. The wireless terminal 100 can also encode audio data stored therein and transmit the encoded audio data to the headset 300 connected using the Bluetooth.RTM. wireless communication. The wireless terminal 100 will be described in detail with reference to FIG. 2. [0018] The headset 300 is an audio data output device and includes a Bluetooth.RTM. wireless communication module to perform the Bluetooth.RTM. wireless communication with the wireless terminal 100. The headset 300 decodes the encoded audio data of the external audio device 200 or the wireless terminal 100, which is received from the wireless terminal 100 using the Bluetooth.RTM. wireless communication, and outputs the decoded audio data. [0019] FIG. 2 is a block diagram of the wireless terminal 100 of FIG. 1 according to the present invention. Continue reading about Apparatus and method for outputting audio data using wireless terminal... 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